Synthesis and Transformations of 5-Substituted 2-Aryl-7H-[1, 2, 4] triazolo [3, 2-b][1, 3] thiazin-7-ones and 2-Aryl-2, 3-dihydro-4H-[1, 3] thiazino [3, 2-a] benzimidazol-4- …

…, AN Esipenko, AN Chernega, MO Lozinskii

文献索引：Britsun; Esipenko; Chernega; Lozinskii Russian Journal of Organic Chemistry, 2005 , vol. 41, # 1 p. 108 - 113

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被引用次数: 6

摘要

Abstract 3-Aryl-1, 2, 4-triazole-5-thiones react with dimethyl acetylenedicarboxylate and methyl 3-phenyl-propynoate to afford the corresponding 5-substituted 2-aryl-7 H-[1, 2, 4] triazolo [3, 2-b][1, 3] thiazin-7-ones. Treatment of 2-aryl-2, 3-dihydro-4 H-[1, 3] thiazino [3, 2- a] benzimidazol-4-ones with alkalies leads to formation of 3-(benzimidazol-2-ylsulfanyl)-3- arylpropionic acids, their reaction with methyl p-toluenesulfonate yields 1-(3-methyl-2- ...